Lock.



H. P. TowNsENn LUCK.

APPLICATION runnsIPT. 1v, 190e.

Patented May 18, 1909.

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sans? crimen HARRY I). TOWNSEND, OF NEW BRITAIN, CONNECTICUT, ASSIG'NORTO/TIIECORBIN CABINET LOCK COMPANY, OF NEW BRITAIN, CONNECTICUT, ACORPORATION OI CONNECTICUT.

LOCK.

Specification of Letters Patent.

Patented May 18, 1909.

To all whom it may concern:

Beit known that I, HARRY P. TowNsnND, a citizen of the United States,and a resident of New Britain, in the county of Hartford and State ofConnecticut, have invented a new and Improved Lock, of which thefollowing is a specification.

My invention relates more especially to the class of locks known aspermutation locks, and the object of the invention is to provide a lockof this class having means whereby the combination may be readily andeasily changed.

A further object of the invention is to provide a lock of this class inwhich the parts cannot be readily disengaged for illegitimate reasons,but in which the parts may be readily assembled or separated forlegitimate purposes; and a further object of the invention is to providesuch a lock with means whereby the combination may be changed withoutseparation of parts; and a still further object of the invention is toprovide such a lock extremely simple in construction and consequentlycheap to manufacture.

A structure in the use of which the above objects may be attained isillustrated in the accompanying drawings, in which- Figure l is aperspective view of a lock embodying my invention. Fig. 2 is a view insection through the parts shown as separated for purposes of clearness.Fig. 3 is a detail view on enlarged scale of the tumblers, couplers andspacers. Fig. 4 is a detail edge view, on enlarged scale, of one of thecouplers. Fig. 5 is a detail plan view of one of the tumblers. Fig. 6 isa detail plan view of the bolt actuator. Fig. 7 is a detail end Viewofthe actuating spindle. Fig. 8 is a detail plan view of the lockingdisk, partially broken away and showing the engaging disk underneath.Eig. 9 is a view in central section, on enlarged scale, `through thedial and connected parts showing the locking disk forced to positiondisengaged from the toothed disk. Fig. 1() is a plan view ot the lockcase and contained mechanism. Fig. 11 is a detail view showing the toolemployed for engaging and disengaging the parts.

In the accompanying drawings the numeral 1 denotes the lock case havinga removable cover 2 suitably secured in place thereon. A sleeve 3 issecured within the case and a series of tumblers, couplers and saacersis mounted on this sleeve. Each of the tumblers is provided with a rowof openings, as shown in Fig. 5 of the drawings and a releasing notch inits periphery. The couplers each have prongs projecting into theopenings in t-he tumblers, the prong on the lower coupler 4 extendinginto the openings sutliciently to cause said tumbler to be rotated withthe coupler, but the prong 5 on the upper coupler 6 is of a length toproject through any of the openings in the tumbler 7 sufliciently tostrike against the side of the prong on the lower coupler. Spacers 8 areproperly located to maintain the couplers in proper position withrespect to other parts, the spacers being held against rotation on thesleeve 3, while the tumblers and couplers are rotatable thereon.

The bolt 9 is suitably mounted to slide in the case and carries a springactuated dog 10 arranged, in its pivotal movement on the bolt, to enterthe releasing notches 11 in the peripheries of the tumblers.

The construction and operation above described are well known in the artof lock construction, and form, except in combination with otherdevices, no part of my present invention, and a further detaileddescription is therefore deemed unnecessary herein.

The cover 2 has an opening 12 located in line with the opening throughthe sleeve 3, a circular lip 13 surrounding said opening on the innerface of the cover receiving a` bolt actuator 14 mounted to rotate onthis lip, a circular recess 15 extending partially through the actuatorfrom one tace and an opening 16 of non-circular form extending from saidrecess through the actuator. A pin 17 projects trom the face oftheactuator in position to engage the prong 5 on the coupler 6.

A hollow actuating spindle 18 is formed to p fit the opening 16 in theactuator but is free to be moved lengthwise therein. A toothed disk 19is rigidly secured to this spindle that is rotatably mounted on a plate20, the s indle projecting through the plate and thellat ter beinglocated between the disk 19 and a flange 21 formed on the spindle. Theend of the spindle is notched as at 22 for the reception of a tool for apurpose hereinafter de scribed.

A locking disk 23 has a toothed recess 24 formed to receive the disk 19,the teeth ofthe disk and recess interlocking. A yoke 25 is secured tosaid locking disk and is located in a slot 26 in the shank 27 of a knob28. This shank has a central opening 29 within which is located a spring30, this spring resting at one end at the closed end of the opening 29and at the other end pressing against the yoke 25. The opening 29 isthreaded at its outer end for the reception of the threaded end of theactuating spindle 18 said shank extending through an opening 31 in thelocking disk 23.

A dial 32 is secured to the knob shank 27, this being of the usual cupshape, its lower edge being located within a recess 33 formed on thesurface oi the plate 20. This dial is provided with the usualgraduations for determining the necessary movements of the knob torelease the bolt. The plate 20 is provided with holes 34 as a means ofsecuring it to a door or like part and the means of engagement of thespindle 18 and the actuator 14 allows the lock to be airixed to doors ofdiierent or varying thickness while maintaining the spindle and actuatorin engagement.

1t will be noted that the locking disk 23 prevents relative rotation ofthe spindle 18 and the knob shank 27, but that by pressing the lockingdisk 23 and yoke 25 to the position shown in Fig. 9 and against theforce of the spring 30 the teeth of the locking disk 23 will bedisengaged from the teeth of the disk 19, whereby the combination of thelock may be readily changed. This pressure on the yoke may be obtainedas by means of a tool 35 inserted through the lock case and through theactuating spindle 1.8. This tool is provided with lugs 36 arranged toenterthe notches 22, sothat at the same time that the yoke 25 is forcedagainst the pressure of the spring 27 the spindle 18 may be held fromrotating, should the pressure on the yoke not be sutlicient to overcomethe friction ofthe threaded engagement of the knob shank 27 and spindle18, causing simultaneous rotation of said parts and thus preventingchange of relative positions and hence of combination.

1t will be noted that this construction provides means whereby the knobshank 27 and actuating spindle 18 cannot be disengaged without access toboth sides of the door, and this eflectually prevents tampering with thelock. The change in the combination ol the lock is also readily effectedand without separation of the parts by pressing the lock disk 23backward, as shown in Fig. 9, and while holding the spindle 18 againstrotation as by means of the tool 35, by turning the disk 23 andconnected dial as by means of the knob 28. This changes the positionrotatably of the disk 23 and connected dial 32 with respect to thetoothed disk 19 and the bolt actuator 14 connected to rotate the saidspindle. This necessitates the use of a new set or' graduations in theoperation of placing the tumblers in position to allow operation ofthebolt, thus eecting a change of combination What 1 claim as my inventionand desire y to secure by Letters Patent is:

1. A lock case including av cover having a lip projecting from its innersurface, a sleeve secured within said case, and mechanism located withinthe case and including a bolt,

tumblers and couplers mounted on saidsleeve, a bolt actuator mounted torotate on said lip and operatively connected with said bolt, and meansfor operating the actuator, said means being adapted to be movedlongitudinally with respect to` the actuator but connected torotate-therewith.

2. A lock case including a coverhavinga circular lip, a sleeve securedwithin the case in axial alinement with said lip and mechanism locatedwithin the case and includ-ing a bolt, tumblers mounted on said sleeveand operatively connected, a bolt actuator mounted on said lip, saidtumblers and actuator being operatively connected with said bolt,y andmeans for operating said' actuator, said means being adapted forlongitudinal movement with respect to the actuator but connected torotate therewith.

3. A lockcase including a cover having a circular lip, a sleeve securedwithin the case in axial alinement with said lip, and mechanism locatedwithin the case and including a bolt, tumblers mounted on said sleeveand operatively connected, a bolt actuator mounted on said lip andhaving a non-circular opening, said tumblers andl actuator beingoperatively connectedv with said bolt, and operating means for saidmechanism in.- cluding a spindle fitting said opening and movablelengthwise therein.

4. A lock case, bolt actuatingmechanism located within the case andincluding a spindle connected to rotate said mechanism, means located atone side of the lock case for operating the spindle, and connectionsbetween said spindle and its operating means for engaging anddisengaging said parts and accessible only from the opposite sidefofsaid lock case from said operating means.

5. A lock case, bolt actuating means located within the case andincludingl an operating spindle projecting within the case to operatesaid mechanism, a plate u on which said spindle is mounted, said p atebeing provided with means for attachment to a door, mechanism locatedoutside of the lock case and connected to operate said s indle, andconnections between said spind e and its operating means for engagingand:v disengaging said parts and accessible only from the opposite sideof said lock case from said mechanism located outside of the case.

6. A lock case, a sleeve secured within the case, lock mechanism locatedwithin the case and including a bolt, tumblers and cou 1ers mounted onsaid sleeve and operative y connected with said bolt, and a spindleprojecting within said sleeve and operatively connected with other partsof said mechanism, means located at one side of the lock case foroperating said s indle, and connections between said spind e and itsoperating means arranged to engage and disengage said parts, saidconnections being accessible only from the o posite side of said lockcase from said spind e operating means.

7. Lock mechanism including a bolt, a spindle, operative connectionsbetween the bolt and spindle, means for operating the spindle, a dialoperatively connected with said spindle operating means, and connectionsbetween said spindle and its operating means including a spring pressedmember arranged to connect and disconnect said parts.

8. A lock mechanism including a bolt, a hollow spindle, o erativeconnections between the bolt an spindle, means for operating thespindle, a dial operatively connected with said spindle operating means,and connections between said spindle and its operating means including aspring pressed member arranged to connect and disconnect said parts,said spring pressed member being accessible only through said s indle.

9. Lock mechanism including a olt, a spindle, operative connectionsbetween said bolt and spindle, means for operating the spindle, a dialoperatively connected with said spindle operating means, connectionsbetween said spindle and its operating means including screw threadedinterengaging parts, a locking member to prevent relative turningmovement of said interengaging screw-threaded parts, and means forengaging and disengaging said locking member.

10. Lock mechanism including a bolt, a hollow spindle, operativeconnections between said bolt and spindle, means for operating thespindle, a dial operatively connected with said spindle operating means,connections between said hollow spindle and its operating meansincluding inte'rengaging screw-threaded parts, and a locking member toprevent relative turning movement of said screw-threaded parts, saidlocking member being accessible only through said spindle.

11. Lock mechanism, including a bolt, a hollow spindle, o erativeconnections between the bolt an spindle, means for operating thespindle, connections between said spindle and its operating means, saidconnections including screw-threaded parts, and

a spring pressed member to lock said parts against relative turningmovement and accessible for engaging and disengaging action only throughsaid spindle.

12. Lock mechanism including a bolt, a hollow spindle, operativeconnections between the bolt and spindle, means for operating thespindle, a dial operatively connected with said spindle operating means,connections between said spindle andl its operating means including adisconnecting locking member, and a yoke secured to the locking memberand projecting across the opening through the spindle.

13. A lock mechanism including a bolt, a spindle, operative connectionsbetween the bolt and spindle, means for operating the spindle, a dialoperatively connected with said spindle operating means, and connectionsbetween said spindle and its operating means including a threaded partto engage a threaded portion on said spindle, a locking member having atoothed recess, a toothed part secured to the spindle and engagingwithin said toothed recess, and a yoke secured to the locking member andprojecting across the opening through the spindle.

14. A lock case including a cover having a lip, a sleeve secured withinthe case, mechanism located within the case and including a bolt,tumblers and couplers mounted on said sleeve, a bolt actuator mounted onsaid lip, a hollow spindle projecting through said actuator, a tootheddisk secured to the spindle, means for operating the spindle, a dialoperatively connected with the spindle operating means, and connectionsbetween said spindle and its operating means including a screwthreadedpart engaging said spindle, a locking member having a toothed recessengaging the disk on the spindle, and a yoke secured to said lockingmember and extending through said spindle operating member and acrossthe opening in the spindle.

15. Lock mechanism including a dial and a spindle, an operativeconnection between said dial and spindle including interengagingscrew-threaded parts, and a locking member for preventing relativeturning movement thereoi", said spindle having means to engage a tool inthe movement of the latter to operate the locking member to preventturning movement oll the spindle.

16. A lock mechanism including a dial, a hollow spindle, and operativeconnections between said dial and spindle including interengagingscrew-threaded parts, and a locking member for preventing relativeturning movement thereof and accessible through said spindle, saidspindle having means to engage a tool in the movement ol' the latter tooperate the locking member to prevent turning movement oi" the spindlein the rotation of the dial.

17. Lock mechanism including a bolt, a

spindle, operative connections between the i dle and its operating meansincluding means bolt and spindle, means for operating the 'l'oiadjustabbT locating one longitudinally spindle7 and connections betweensaid spinwith respect to tlie other, means for preventdle and itsoperating means7 said connections ing relative turning movement of saidparts, 5 including a member movably mounted to and means for engagingand disengaging said x members.

connect and disconnect said parts.

18. Lock mechanism including a bolt, a HARRY P. TOWNSEND. spindle,operative connections between the Witnesses:

bolt and spindle, means for operating tlie BERTHA WiLLi-AMs BUNNELL, 10spindle7 and connections between said spin- ALICE BT MUNsoN.

